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206 questions

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Last activity 2017-03-23 17:44:55 +0100 by Elias Simon

Can I update the SoftDevice without touching the application?

I'm working on an OTA firmware update process, using my own bootloader and application. To understand the process' limitations, I need to know to what extent one can update the SoftDevice without invalidating the application.

The chart on the ... (more)

23
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1
vote
2
answers
Last activity 2017-03-23 15:24:49 +0100 by Maxim flag of Russian Federation

Deny connection on wrong application

Hi,

I'm working on a Custom Android app which connect to my NRF52 without any security.

This App is based on the UART demo App for Android, but I want that only my App will be able to connect ... (more)

51
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no
votes
1
answer
Last activity 2017-03-23 08:33:57 +0100 by Kristin flag of Norway

Softdevice halts at location 0x000008C4

Hi There,

We have an issue where our project crashes, but the app_error_fault_handler() callback is not being called to help identify the cause of the issue. We are using the following version of the Softdevice: s132_nrf52_3.0.0_softdevice.hex

Without ... (more)

40
views
no
votes
1
answer
Last activity 2017-03-22 12:42:00 +0100 by Hung Bui

freertos not working in nRF5_SDK_13.0.0_04a0bfd

Just opened the new sdk and tried it out. Keil stated I needed to update packs so I did

I have 2 DK boards both are versions V1.1.0 dated 2016 32

Using nRFGo I erase all and load ... (more)

64
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1
vote
3
answers
Last activity 2017-03-21 14:42:40 +0100 by Hung Bui

Frequency hopping with S132 v3

Hello! I'd like to know if S132 v3 implements the frequency hopping scheme defined by BLE.

I've read some documentation on Gazell, but from what I understood, that is a completely different protocol, not a superset of BLE ... (more)

114
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no
votes
3
answers
Last activity 2017-03-21 12:54:24 +0100 by AmiguelS

More than 1 packet per CI with S132 V3.0.0

Hello! I am using a nRF52832 device, along with SDK 12.1.0 and S132 v3.0.0. Data is being sent data through BLE and received on an Android phone.

After some tests I noticed that I was not ... (more)

25
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no
votes
1
answer
Last activity 2017-03-20 10:41:34 +0100 by Sigurd flag of Norway

softdevice 132 used heap?

I want at s132 use RT-Thread RTOS,but I see arm_startup_nrf52.s file defined Stack_Size and Heap_Size 8K, can define Heap_Size = 0? reduce the Stack_Size (such as 4K)? so,RT-Thread RTOS can use larger memory.

40
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1
vote
1
answer
Last activity 2017-03-20 09:44:11 +0100 by Wojtek flag of Poland

nrf52 PPI+EasyDMA using timer and SPI

Hi,

I am using nrf52832 for my application. The application share same SPI module for two sensors(with sensors are selected using two chip select pins). Is it possible to implement PPI channel between a timer and this SPI module ... (more)

25
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1
vote
1
answer
Last activity 2017-03-19 22:11:11 +0100 by Turbo J

ULINKpro Keil -> Cannot access memory

Hi. I have an NRF52DK Board. With the built in JLINK Debugger it works fine. Now i bougt an KEIL ULINKpro Debugger. Is connected with the 10 Pin cable. And i cannot flash the Firmware. It gives this Error.

image description

image description

This ... (more)

26
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-1
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no
answers
Last activity 2017-03-13 16:45:26 +0100 by juge90

I find the bluetooth protocol stack to hang out?

Sometimes,I find the bluetooth protocol stack to hang out.At that time, bluetooth and flash related operation is invalid.

SDk12.0.0 S132 freertos

27
views
1
vote
1
answer
Last activity 2017-03-10 11:48:09 +0100 by endnode

BLE Central Server multiple Peripheral Clients

I need to have a Central device physically connected (via UART) to a sensor. Data is collected from the sensor and sent to a number of Peripheral devices which use the data to perform a task.

So far I have ... (more)

487
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2
votes
1
answer
Last activity 2017-03-03 15:11:54 +0100 by Hung Bui

NRF52 ble_db_discovery failed to initialize correctly when repeats the service discovery

Hi

We are using NRF52 and SDK 11 and S132.

The nrf52 acts as a central and selectively connects to the closest phones (ios) that are acting as a pheripheral. For this purpose we have 4 characteristics (TX, RX, RSSI ... (more)

47
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1
vote
1
answer
Last activity 2017-02-28 10:15:20 +0100 by Jørgen Holmefjord flag of Norway

What are nRF52 advertisements exactly good for and what UUID do I have to put?

Hi!

So I managed to create my custom service with one characteristic (a struct with several attribs). I can see it in my app and everything's awesome. Yay.

But in some tutorial and in the sample app I altered ... (more)

232
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2
votes
2
answers
Last activity 2017-02-23 19:03:23 +0100 by Alessandro

How to send longer than 256 bytes in nRF52 spi list mode with nRF5_SDK_11?

Hi: Recently, I want to use nRF52 to read or write some data from a flash chip(w25q128bv) by using spi, I've read Manufactures ID correctly, also, I have wrote a register of the flash chip and read back ... (more)

36
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no
votes
1
answer
Last activity 2017-02-22 13:19:58 +0100 by Bjørn Spockeli flag of Norway

Version numbers for Secure DFU

Why do the version numbers have to be as follows for a merged hex file to be able to exit the dfu mode when flashed externally as a combined hex file (SD +BL + BL settings + App)?

nrfutil settings generate --family ... (more)

47
views
4
votes
1
answer
Last activity 2017-02-21 09:11:44 +0100 by Tostikoning

Reset on SVCALL BLE enable

Hi all,

I am trying to get the ble template of SDK12.2 working in eclipse using a managed makefile. The softdevice I use is s132 v3.0.0. The board is an evaluation kit from Taiyo Yuden (EKSHCNZXZ) which ... (more)

93
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no
votes
no
answers
Last activity 2017-02-21 08:09:37 +0100 by jasonbu

[solved] DFU swap region remains contents [closed]

when using secureDFU with sdk12.2, only changed the mac address. my application is more than 60KByte, when i test the firmware for two files, one is 62K and an other is 64K. it got a trouble, when data send ... (more)

37
views
no
votes
1
answer
Last activity 2017-02-17 20:36:58 +0100 by Bill Saltzstein

S132 central find service with 128bit uuid

Hi, I'm trying to modify one of the examples (the hrs_relay) to find my custom service to identify the device uniquely. I know I need to add the 128bit uuid using and then use that handle, but am getting ... (more)

50
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1
vote
1
answer
Last activity 2017-02-17 16:28:40 +0100 by Jørgen Holmefjord flag of Norway

Concurrent Central/Peripheral UART

Hi,

I'am actually trying to develop a BLE based remote, with NRF52832, S132.

This remote must be configured by a smartphone (the remote act as peripheral) and be able to control one equipement (and act as Central).

As i ... (more)

67
views
3
votes
1
answer
Last activity 2017-02-15 09:55:28 +0100 by embo san

Easiest way for two nRF52x devices to ping each other?

Greetings Nords, total noob here, I've got two preview nRF52840 devices (as well as the two normal nRF52 devices), I want my two preview devices to be able to ping each other, what is the easiest way to achieve ... (more)

64
views
1
vote
1
answer
Last activity 2017-02-14 15:32:58 +0100 by Sigurd flag of Norway

why SPI easyDMA maxcount is limited to 256byte?

Hi,

In the nrf52.h, SPIM_RXD_Type is defined as below.

typedef struct {
  __IO uint32_t  PTR;/*!< Data pointer */
  __IO uint32_t  MAXCNT;/*!< Maximum number of bytes in receive buffer*/
  __I  uint32_t  AMOUNT;/*!< Number of bytes transferred in the last transaction*/
  __IO uint32_t ...
(more)

131
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no
votes
1
answer
Last activity 2017-02-08 13:33:13 +0100 by akshaey

How to make a simple LED blink program

Hello Everyone

I am really new to everything here, i just got nRF 52832 board,

Can anyone please tell me the step-by- step method on how to make a program in keil uVision.

Any help will be greatly appreciated.

thanks in advance

103
views
2
votes
2
answers
Last activity 2017-02-06 16:02:07 +0100 by Petter Myhre flag of Norway

BLE Encryption without any

I'm using the nRF52DK and S132. Is it possible to encrypt a link without any pairing, bonding and authentication process ? Please show me the way how to implement with the APIs if it is. Thank you.

142
views
1
vote
1
answer
Last activity 2017-02-06 13:08:25 +0100 by Kristin flag of Norway

Can't read characteristics of BLE HID service example

I'm trying to implement the HID service on a custom nrf52832 board, unfortunately I'm running into problems.

Here's what happens: Advertising, connecting to the board, service discovery, GPIOs (buttons & LEDs), reading the battery level, etc. all work ... (more)

50
views
no
votes
no
answers
Last activity 2017-02-06 03:43:10 +0100 by RK flag of Singapore

How can I update my passkey using sd_ble_opt_set() on runtime

Hello everyone, I successfully implemented the static key to access a characteristic now I want the user to udpate the passkey through another characteristic (which is also protected).

I successfully read the value of the passkey entered by the user ... (more)

63
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no
votes
no
answers
Last activity 2017-01-26 14:57:25 +0100 by Pascal Künzi

nRF52 max. input frequency on GPIO [closed]

Hi all,

I am trying to count the positive edges of a 3.5MHz signal with GPIOTE, PPI and the TIMER1. Unfortunately i can only measure to frequencies up to a little more than 1MHz. What is the limitating factor ... (more)

37
views
no
votes
2
answers
Last activity 2017-01-15 23:59:29 +0100 by wecare

Send multiple MOSI signal to SPI and received it on m_rx_buf?

Hello!

Does anyone know how can we send the multiple uint8_t MOSI signal to SPI and received the result on m_rx_buf?

Trying to send multiple bytes to "m_tx_buf":

#define SPI_INSTANCE  0 /**< SPI instance index. */  //line 24
static const nrf_drv_spi_t spi ...
(more)

95
views
no
votes
1
answer
Last activity 2017-01-13 11:00:13 +0100 by Petter Myhre flag of Norway

sd_ble_gatts_value_get sd_ble_gatts_value_set

Hello Please tell me about sd_ble_gatts_value_get (). Please tell me about sd_ble_gatts_value_set (). For these two cases, it is not used in the SDK, but is it old? Please tell me about these alternatives. thanks

25
views
no
votes
1
answer
Last activity 2017-01-12 22:34:43 +0100 by Ian flag of Canada

RTC1 not reset after DFU

I'm using an app timer to blink an LED while in the bootloader.

Initially I was configuring an app timer when the bootloader started up and never stopped it, assuming the reset would clear any RTC1 settings. I noticed ... (more)

322
views
2
votes
1
answer
Last activity 2017-01-10 13:16:02 +0100 by erltot

unhandled events

I have set up ble_app_uart along with gpiote and spi. When I first trigger the GPIOTE event the MCU is supposed to go to sleep after, but it seems to keep running in the main loop, surpassing the power_manage(); function ... (more)

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